Parker uses the gravity of Venus to sling itself closer to the sun with each revolution. By the end of its useful life, it will travel about a million miles closer to the sun than this particular flyby. This is a significant scientific advantage, because the sun is getting closer to its solar maximum, a cycle that renews every 11 earth years. That’s the point at which the sun’s activity increases, allowing researchers to investigate these rare phenomena.
Ride Along On The Trans Mass Trail